INDUCTIVE NON-CONTACT MEASUREMENT OF A RELATIVE MOVEMENT OR RELATIVE POSITIONING OF A FIRST OBJECT RELATIVE TO A SECOND OBJECT

摘要

The invention concerns a method for non-contact measurement of a relative movement or relative positioning of a first object with respect to a second object such as segmented mirrors of a giant telescope, which consists in: exciting at least one transmitter coil, placed on the first object, through an alternating current signal; detecting at least one alternating current voltage (va), generated by mutual inductance in at least one receiver coil placed on said second object, said at least one receiver coil being placed in a magnetic field generated by said at least one transmitter coil; and determining the relative movement of the first object with respect to the second object based on said at least one voltage generated on said at least one receiver coil.